Electronegativity and Bond Polarity

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

How does electronegativity change across a period in the periodic table?

Back

Electronegativity increases from left to right across a period due to increasing nuclear charge.

Front

How does electronegativity change down a group in the periodic table?

Back

Electronegativity decreases down a group due to increased distance between the nucleus and the valence electrons.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of bond where electrons are shared unequally between two atoms, resulting in a dipole moment.

Front

What is a nonpolar covalent bond?

Back

A nonpolar covalent bond is a type of bond where electrons are shared equally between two atoms.

Front

What does the symbol δ represent in chemistry?

Back

The symbol δ (delta) indicates a partial positive (δ+) or partial negative (δ-) charge in a polar molecule.

Front

What is the significance of the dipole arrow in a molecule?

Back

The dipole arrow indicates the direction of the dipole moment, pointing towards the more electronegative atom.

Front

How do you determine the polarity of a molecule?

Back

The polarity of a molecule can be determined by the difference in electronegativity between the bonded atoms and the molecular geometry.

Front

What is the electronegativity trend for halogens?

Back

In halogens, electronegativity increases from iodine (I) to fluorine (F).

Front

What is the electronegativity of fluorine?

Back

Fluorine has the highest electronegativity value of 4.0 on the Pauling scale.